Squarespace Developer Platform Beta
developers.squarespace.comSquarespace's developer platform is now in beta, featuring Git and SFTP access, total template code control, less.css on the server, JSON behind every URL, and more.
http://blog.squarespace.com/developer-platform-beta
Developers also get an infinite trial (free until you publish). Very cool! Can't wait to play with it. Been a fan of Squarespace for years.